Rotary engine.



J. M. SANDERS.

ROTARY ENGINE, APPLlcATmN HLEn FEB. 5. 191i.

1,220,688. Patented Mar. 27, 1917.

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ROTAHY ENMJNE APPucATloN FILED FEB. 5. 19|?.

UNITED STATES PATENT OFFICE;

JAMES MAUnsLAY SANDERS; F KEYNSHAM, NEAR BRISTOL, ENGLAND.

ROTARY ENGINE To all whom it may concern.' VBe it known that l. .TA- unsl.\`l.\t.fnsr..\v 4Saxinclus, a subject ot' the King of England,residingat Keynshani, near Bristohlng- 6- land', have inii-'entedcertain new and uset'ul Improvements in Rotary Engines.'of'whieh thefollowing is a specification. y

This invention relates torotary engines of the kind in which a groovedworin wheel is engaged by a toothed wheel.

This invention comprises agrooved worm wheel'a sector ot' which iseased' at the sides by a stationary casing and on its periphery by anaxial extension of a toothed wheel which gears with the grooved wheel,the expanding,r in the grooves' between the teethof the worin wheelbetween one sido of the easing` and a loo-th of 'the toothed wheel.'

ln the aeeompanyingr` drawings, Figure 1 is a central vertical section(Fig. Q is a plan withthe .cover removed, while Bis a diagramillustrating the opera tion, with the worm wheel developed.

Like letters indirate'like parts iin-noughout-the drawings. l

In' this rotary enginel A a worm wheel provided with` helical or othersimilar grooves in its periphery. lilith the-e grooves engage teeth Bo'n the toothed wheel Chaud 'it will be clear that the two wheels Aand() revolve. relatively to one another alter the manner of a. pair olworm wheels. The 35 shaft A2- oa-rrying y the. orm wheel A :isadjustable toward the shaft C2 to vary and 'adjust the mesh of theteeth. and a thrust hearingr is fitted at A3 to take Ythe thrustreaction due tothe lexplosion pressure. The wheel A. t0.bea,-rs'upagainst the underside ol a bar or platefyvhioh inthe. vous(rurtiou illustrated is i l constituted by the part ll ot the rover D2=Whiol 1 istitted to the box' Dit rari-ying the bearings andinolosinerthe wheels, which riinsilioil lcontained in the box. rThe plate 4isprovided with a lslot at lvl through which the teeth B pass iunnediatelyprior to inesllingivh the.- grooves in the worm wheel The plate. D isalso provided with an inlet portii X, a` sparking plug l?, a. water iinlet YQ ,andan exhaust outlet Z, as indiea-tedclearly. in Fig. 3. f

Ontlieilnderside a plated? pressednp byvsprings G' against the. worinwheel A so Y Specification of LettersPatent.

. tion of the arrow a: (Fig. 3l the tooth receives lp'ressur e.

movement the to i of the groove comes under Patented 51211127, 1917.

Application filed February 5, 1917. Serial No, 1 L6,828.

The method il operation can be easily` understood wit] reference to the.diagram shown in Fig. 5.- Assuming; the wheel C carrying the tee '.h Bto rotate in the direcwill pass through the slot E in the plate D andenter the groove H. in the peripheryr of the worm whe il Furtl'lermovement brings the top of the groove [l under the inlet port whenvolume ot rombustible gas under high presmre enters the groove above thetooth lig. lurther rotation brings the top of the groovl which we willnow assume to be the groovi IP, beneath the sparking plug: so'that the:ooth now assumed to he B3 After a slight further the water inletso'that water injected into the heated groofe cools this and by beingflashed into steam maintains the pressure. llventually the tooth passesout of the groove as shown at B, and by this time the groove. whieh'lsassumed to be that marked Il. is sealedat the bottom by the plate Fwhile the top ("mnnunieates with the eX- haust ou'tlet. The gases thusest-ape ex'eept 4for a. small residue which is swept out the next time(he groove is entered by a tooth. ln the. .same way the oil enteringVthe groove is .dislodged in advance oi the entering'.

tooth. y

Preferably the metalsseleeted for the eon struction of the d lite-rentparts have different eoeflieients of expansion so as to maintain thesame elearanee between the teeth and the grooves as the parts heatup. 4

By this means a very simple construction of internal eoml ustion enginecanbeproduced, with only two moving parts, `apart from the eompreisorsupplying the gas. If

more than one point .by 'a wheel suoli as C -so that it is subleeted topressure at more ent, or the port positions of the pla-te D may beVaried. Fig. 3 only indicates the method employed.

`What I claim as my invention and desire to secure by Letters Patent isa groafved Worm Wl1eel,' a stationary' casingl consisting of a slottedplate with inlet and exhaust ports therein and an ignition device, saidplate inolosing a sector of said Worm i/fheel a toothed Wheel gearingWith Said 'worin Wheel, and an axial extension on said toothed Wheeineasing the periphery of the worm Wheeh ai .so arrarged that the-gasesexpand in @hampers formed by the teeth of the Worin wheel, one side oit'the easing and the 'teeth of the toothed Wheel.

3. In a rotary internal combustion engine, a groef/ed. Worin Wheel, astationary Casin consisting of a slotted plate with inlet and exhaustports therein and an. ignition device, said plate inclosing a sector ofsaid Worin Wheel, a toothed Wheel gearing with said. Worm Wheel, anaxial extension on said toothed Wheel incasing the periphery of the wormwheel and a supplementary spring loaded plate pressing agalnst the sideof the Worm wheel remote from the slotted plate, all so arranged thatthe exhaust discharges from a. chamber formed by the teeth of theworm-Wheel, the slotted plate and the spring pressed plate. d

el. In a rotary internal combustion engine,

a grooved Worm wheel, a stationary easing` consisting of a slotted plateWith inlet, eX'- haust and Water ports therein and an ignition device,Said plate inelosing a sector vof said Worm Wheel, a toothed Wheelgearing with said Worm Wheel,;an axial extension on said toothed'wheeline'asing the periphery of theworm Wheel,v a supplementary spring loadedplate pressing against the side of the Worm Wheel remote from theslotted plate and means for injecting Water through the Water port, forthe pur ose described.

In testimony Whereo I have signed my name to this specification in thepresence of two subscribing Witnesses.

JAMES MAUDSLAY SANDERS.

Witnesses:

.WILLIAM FREDERICK WILKINS, ARTHUR EDWARD BLANnroRn.

